HIGH-STRENGTH PRESTRESSING STRAND, METHOD FOR MANUFACTURING THE SAME, AND CONCRETE CONSTRUCTION USING THE SAME

摘要

The present invention provides a prestressing strand that has higher strength and is more suitable for practical use than known prestressing strands, and a concrete construction using the prestressing strand. The prestressing strand that has higher strength and is more suitable for practical use than known prestressing strands has a seven-wire structure in which one core wire and six outer wires are stranded and can be made by adjusting the external diameter to 15.0 mm to 16.1 mm, the total cross-sectional area to 135 mm 2 or more, and the load at 0.2% or 0.1% permanent elongation to 266 kN or more.